I would not mind using it in production, but the production servers are
built
by the SysOps team, and the official Linux here is RH ES 4.

Essentially Oracle's linux is identical to RH - it's just recompiled source
with an Oracle logo.

Unless you are going to use it in a production environment and want to
get 'unbreakable' support from Oracle, I don't think it really matters if
you
use Oracle, RedHat, CentOs, WhiteBox or some other distribution.

Aside from logos and possible default sites for updates, they're pretty
much the same thing.

I've used them all for Oracle, and they have all worked.

There's other folks on this list that have probably built a lot more of
these
than I have, maybe they will chime in as well.